An abnormal curve of the lumbar spine is lordosis, also called sway back. An abnormal curve of the thoracic spine is kyphosis, also called hunchback. An abnormal curve from side-to-side is called scoliosis.
There are approximately 560,000,000,000 planets in outer space that scientists have discovered. In this solar system, there are eight planets. In this galaxy, there are likely between 50 billion and a trillion planets-or more. At this point, we can hardly guess.
Astronomers have discovered that over 160 billion planets orbit stars in our galaxy. They are called exoplanets. Help us build the first list of names the public wants to see exoplanets named with! Every nomination helps fund space research and education.